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Tanwar H, Gnanasekaran JM, Allison D, Chuang LS, He X, Aimetti M, Baima G, Costalonga M, Cross RK, Sears C, Mehandru S, Cho J, Colombel JF, Raufman JP, Thumbigere-Math V. Unravelling the Oral-Gut Axis: Interconnection Between Periodontitis and Inflammatory Bowel Disease, Current Challenges, and Future Perspective. J Crohns Colitis 2024; 18:1319-1341. [PMID: 38417137 PMCID: PMC11324343 DOI: 10.1093/ecco-jcc/jjae028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 12/04/2023] [Accepted: 02/27/2024] [Indexed: 03/01/2024]
Abstract
As the opposite ends of the orodigestive tract, the oral cavity and the intestine share anatomical, microbial, and immunological ties that have bidirectional health implications. A growing body of evidence suggests an interconnection between oral pathologies and inflammatory bowel disease [IBD], implying a shift from the traditional concept of independent diseases to a complex, reciprocal cycle. This review outlines the evidence supporting an 'oral-gut' axis, marked by a higher prevalence of periodontitis and other oral conditions in IBD patients and vice versa. We present an in-depth examination of the interconnection between oral pathologies and IBD, highlighting the shared microbiological and immunological pathways, and proposing a 'multi-hit' hypothesis in the pathogenesis of periodontitis-mediated intestinal inflammation. Furthermore, the review underscores the critical need for a collaborative approach between dentists and gastroenterologists to provide holistic oral-systemic healthcare.
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Affiliation(s)
- Himanshi Tanwar
- Division of Periodontology, University of Maryland School of Dentistry, Baltimore, MD, USA
| | | | - Devon Allison
- Division of Periodontology, University of Maryland School of Dentistry, Baltimore, MD, USA
| | - Ling-shiang Chuang
- Division of Gastroenterology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Xuesong He
- Department of Microbiology, The Forsyth Institute, Cambridge, MA, USA
| | - Mario Aimetti
- Department of Surgical Sciences, C.I.R. Dental School, University of Turin, Turin, Italy
| | - Giacomo Baima
- Department of Surgical Sciences, C.I.R. Dental School, University of Turin, Turin, Italy
| | - Massimo Costalonga
- Department of Diagnostic and Biological Sciences, School of Dentistry, University of Minnesota, Minneapolis, MN, USA
| | - Raymond K Cross
- Division of Gastroenterology & Hepatology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Cynthia Sears
- Division of Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Saurabh Mehandru
- Division of Gastroenterology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Judy Cho
- Division of Gastroenterology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jean-Frederic Colombel
- Division of Gastroenterology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jean-Pierre Raufman
- Division of Gastroenterology & Hepatology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Vivek Thumbigere-Math
- Division of Periodontology, University of Maryland School of Dentistry, Baltimore, MD, USA
- National Institute of Dental and Craniofacial Research, NIH, Bethesda, MD, USA
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Xu Y, Yi H, Kuang Q, Zheng X, Xu D, Gong L, Yang L, Xiang B. Nucleotide metabolism-related host proteins RNA polymerase II subunit and uridine phosphorylase 1 interacting with porcine epidemic diarrhea virus N proteins affect viral replication. Front Vet Sci 2024; 11:1417348. [PMID: 38933700 PMCID: PMC11200923 DOI: 10.3389/fvets.2024.1417348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Accepted: 05/27/2024] [Indexed: 06/28/2024] Open
Abstract
Porcine epidemic diarrhea virus (PEDV) is a highly infectious pathogen that targets pig intestines to cause disease. It is globally widespread and causes huge economic losses to the pig industry. PEDV N protein is the protein that constitutes the core of PEDV virus particles, and most of it is expressed in the cytoplasm, and a small part can also be expressed in the nucleus. However, the role of related proteins in host nucleotide metabolic pathways in regulating PEDV replication have not been fully elucidated. In this study, PEDV-N-labeled antibodies were co-immunoprecipitated and combined with LC-MS to screen for host proteins that interact with N proteins. Bioinformatics analyses showed that the selected host proteins were mainly enriched in metabolic pathways. Moreover, co-immunoprecipitation and confocal microscopy confirmed that the second-largest subunit of RNA polymerase II (RPB2) and uridine phosphorylase 1 (UPP1) interacted with the N protein. RPB2 is the main subunit of RNA polymerase II and plays an important role in eukaryotic transcription. UPP1 is an enzyme that catalyzes reversible phosphorylation of uridine to uracil and ribo-1-phosphate to promote catabolism and bio anabolism. RPB2 overexpression significantly promoted viral replication, whereas UPP1 overexpression significantly inhibited viral replication. Studies on interactions between the PEDV N and host proteins are helpful in elucidating the pathogenesis and immune escape mechanism of PEDV.
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Affiliation(s)
- Yifan Xu
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, China
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Heyou Yi
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Animal Pathogen Infection and Immunology of Fujian Province, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Qiyuan Kuang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Xiaoyu Zheng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Dan Xu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Lang Gong
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Liangyu Yang
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, China
| | - Bin Xiang
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, China
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
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Zhu T, Zhou X, You Y, Wang L, He Z, Chen D. cisDynet: An integrated platform for modeling gene-regulatory dynamics and networks. IMETA 2023; 2:e152. [PMID: 38868212 PMCID: PMC10989917 DOI: 10.1002/imt2.152] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 11/06/2023] [Indexed: 06/14/2024]
Abstract
Chromatin accessibility sequencing has been widely used for uncovering genetic regulatory mechanisms and inferring gene regulatory networks. However, effectively integrating large-scale chromatin accessibility datasets has posed a significant challenge. This is due to the lack of a comprehensive end-to-end solution, as many existing tools primarily emphasize data preprocessing and overlook downstream analyses. To bridge this gap, we have introduced cisDynet, a holistic solution that combines streamlined data preprocessing using Snakemake and R functions with advanced downstream analysis capabilities. cisDynet excels in conventional data analyses, encompassing peak statistics, peak annotation, differential analysis, motif enrichment analysis, and more. Additionally, it allows to perform sophisticated data exploration, such as tissue-specific peak identification, time course data modeling, integration of RNA-seq data to establish peak-to-gene associations, constructing regulatory networks, and conducting enrichment analysis of genome-wide association study (GWAS) variants. As a proof of concept, we applied cisDynet to reanalyze comprehensive ATAC-seq datasets across various tissues from the Encyclopedia of DNA Elements (ENCODE) project. The analysis successfully delineated tissue-specific open chromatin regions (OCRs), established connections between OCRs and target genes, and effectively linked these discoveries with 1861 GWAS variants. Furthermore, cisDynet was instrumental in dissecting the time course open chromatin data of mouse embryonic development, revealing the dynamic behavior of OCRs over developmental stages and identifying key transcription factors governing differentiation trajectories. In summary, cisDynet offers researchers a user-friendly solution that minimizes the need for extensive coding, ensures the reproducibility of results, and greatly simplifies the exploration of epigenomic data.
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Affiliation(s)
- Tao Zhu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life SciencesNanjing UniversityNanjingChina
| | - Xinkai Zhou
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life SciencesNanjing UniversityNanjingChina
| | - Yuxin You
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life SciencesNanjing UniversityNanjingChina
| | - Lin Wang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life SciencesNanjing UniversityNanjingChina
| | - Zhaohui He
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life SciencesNanjing UniversityNanjingChina
| | - Dijun Chen
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life SciencesNanjing UniversityNanjingChina
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Varzari A, Deyneko IV, Bruun GH, Dembic M, Hofmann W, Cebotari VM, Ginda SS, Andresen BS, Illig T. Candidate genes and sequence variants for susceptibility to mycobacterial infection identified by whole-exome sequencing. Front Genet 2022; 13:969895. [PMID: 36338958 PMCID: PMC9632272 DOI: 10.3389/fgene.2022.969895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 10/04/2022] [Indexed: 11/13/2022] Open
Abstract
Inborn errors of immunity are known to influence susceptibility to mycobacterial infections. The aim of this study was to characterize the genetic profile of nine patients with mycobacterial infections (eight with BCGitis and one with disseminated tuberculosis) from the Republic of Moldova using whole-exome sequencing. In total, 12 variants in eight genes known to be associated with Mendelian Susceptibility to Mycobacterial Disease (MSMD) were detected in six out of nine patients examined. In particular, a novel splice site mutation c.373–2A>C in STAT1 gene was found and functionally confirmed in a patient with disseminated tuberculosis. Trio analysis was possible for seven out of nine patients, and resulted in 23 candidate variants in 15 novel genes. Four of these genes - GBP2, HEATR3, PPP1R9B and KDM6A were further prioritized, considering their elevated expression in immune-related tissues. Compound heterozygosity was found in GBP2 in a single patient, comprising a maternally inherited missense variant c.412G>A/p.(Ala138Thr) predicted to be deleterious and a paternally inherited intronic mutation c.1149+14T>C. Functional studies demonstrated that the intronic mutation affects splicing and the level of transcript. Finally, we analyzed pathogenicity of variant combinations in gene pairs and identified five patients with putative oligogenic inheritance. In summary, our study expands the spectrum of genetic variation contributing to susceptibility to mycobacterial infections in children and provides insight into the complex/oligogenic disease-causing mode.
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Affiliation(s)
- Alexander Varzari
- Laboratory of Human Genetics, Chiril Draganiuc Institute of Phthisiopneumology, Kishinev, Moldova
- Hannover Unified Biobank, Hannover Medical School, Hannover, Germany
- *Correspondence: Alexander Varzari,
| | - Igor V. Deyneko
- Laboratory of Functional Genomics, Timiryazev Institute of Plant Physiology Russian Academy of Sciences, Moscow, Russia
| | - Gitte Hoffmann Bruun
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense M, Denmark
- The Villum Center for Bioanalytical Sciences, University of Southern Denmark, Odense, Denmark
| | - Maja Dembic
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense M, Denmark
- The Villum Center for Bioanalytical Sciences, University of Southern Denmark, Odense, Denmark
- Department of Clinical Genetics, Odense University Hospital, Odense, Denmark
- Department of Mathematics and Computer Science, University of Southern Denmark, Odense, Denmark
| | - Winfried Hofmann
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Victor M. Cebotari
- Municipal Hospital of Phthisiopneumology, Department of Pediatrics, Kishinev, Moldova
| | - Sergei S. Ginda
- Laboratory of Immunology and Allergology, Chiril Draganiuc Institute of Phthisiopneumology, Kishinev, Moldova
| | - Brage S. Andresen
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense M, Denmark
- The Villum Center for Bioanalytical Sciences, University of Southern Denmark, Odense, Denmark
| | - Thomas Illig
- Hannover Unified Biobank, Hannover Medical School, Hannover, Germany
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IRF8: Mechanism of Action and Health Implications. Cells 2022; 11:cells11172630. [PMID: 36078039 PMCID: PMC9454819 DOI: 10.3390/cells11172630] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/17/2022] [Accepted: 08/21/2022] [Indexed: 11/29/2022] Open
Abstract
Interferon regulatory factor 8 (IRF8) is a transcription factor of the IRF protein family. IRF8 was originally identified as an essentialfactor for myeloid cell lineage commitment and differentiation. Deletion of Irf8 leads to massive accumulation of CD11b+Gr1+ immature myeloid cells (IMCs), particularly the CD11b+Ly6Chi/+Ly6G− polymorphonuclear myeloid-derived suppressor cell-like cells (PMN-MDSCs). Under pathological conditions such as cancer, Irf8 is silenced by its promoter DNA hypermethylation, resulting in accumulation of PMN-MDSCs and CD11b+ Ly6G+Ly6Clo monocytic MDSCs (M-MDSCs) in mice. IRF8 is often silenced in MDSCs in human cancer patients. MDSCs are heterogeneous populations of immune suppressive cells that suppress T and NK cell activity to promote tumor immune evasion and produce growth factors to exert direct tumor-promoting activity. Emerging experimental data reveals that IRF8 is also expressed in non-hematopoietic cells. Epithelial cell-expressed IRF8 regulates apoptosis and represses Osteopontin (OPN). Human tumor cells may use the IRF8 promoter DNA methylation as a mechanism to repress IRF8 expression to advance cancer through acquiring apoptosis resistance and OPN up-regulation. Elevated OPN engages CD44 to suppress T cell activation and promote tumor cell stemness to advance cancer. IRF8 thus is a transcription factor that regulates both the immune and non-immune components in human health and diseases.
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Lin X, Zhang H, Liu J, Wu CL, McDavid A, Boyce BF, Xing L. Aged Callus Skeletal Stem/Progenitor Cells Contain an Inflammatory Osteogenic Population With Increased IRF and NF-κB Pathways and Reduced Osteogenic Potential. Front Mol Biosci 2022; 9:806528. [PMID: 35755815 PMCID: PMC9218815 DOI: 10.3389/fmolb.2022.806528] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 04/29/2022] [Indexed: 11/15/2022] Open
Abstract
Skeletal stem/progenitor cells (SSPCs) are critical for fracture repair by providing osteo-chondro precursors in the callus, which is impaired in aging. However, the molecular signatures of callus SSPCs during aging are not known. Herein, we performed single-cell RNA sequencing on 11,957 CD45-CD31-Ter119- SSPCs isolated from young and aged mouse calluses. Combining unsupervised clustering, putative makers, and DEGs/pathway analyses, major SSPC clusters were annotated as osteogenic, proliferating, and adipogenic populations. The proliferating cluster had a differentiating potential into osteogenic and adipogenic lineages by trajectory analysis. The osteoblastic/adipogenic/proliferating potential of individual clusters was further evidenced by elevated expression of genes related to osteoblasts, adipocytes, or proliferation. The osteogenic cluster was sub-clustered into house-keeping and inflammatory osteogenic populations that were decreased and increased in aged callus, respectively. The majority of master regulators for the inflammatory osteogenic population belong to IRF and NF-κB families, which was confirmed by immunostaining, RT-qPCR, and Western blot analysis. Furthermore, cells in the inflammatory osteogenic sub-cluster had reduced osteoblast differentiation capacity. In conclusion, we identified 3 major clusters in callus SSPCs, confirming their heterogeneity and, importantly, increased IRF/NF-κB-mediated inflammatory osteogenic population with decreased osteogenic potential in aged cells.
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Affiliation(s)
- X. Lin
- Department of Pathology and Laboratory Medicine, Rochester, NY, United States
| | - H. Zhang
- Department of Pathology and Laboratory Medicine, Rochester, NY, United States
| | - J. Liu
- Department of Pathology and Laboratory Medicine, Rochester, NY, United States
| | - C L. Wu
- Center for Musculoskeletal Research, Rochester, NY, United States
| | - A. McDavid
- Biostatistics and Computational Biology, University of Rochester Medical Center, Rochester, NY, United States
| | - B. F. Boyce
- Department of Pathology and Laboratory Medicine, Rochester, NY, United States
- Center for Musculoskeletal Research, Rochester, NY, United States
| | - L. Xing
- Department of Pathology and Laboratory Medicine, Rochester, NY, United States
- Center for Musculoskeletal Research, Rochester, NY, United States
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Zhang K, Hocker JD, Miller M, Hou X, Chiou J, Poirion OB, Qiu Y, Li YE, Gaulton KJ, Wang A, Preissl S, Ren B. A single-cell atlas of chromatin accessibility in the human genome. Cell 2021; 184:5985-6001.e19. [PMID: 34774128 PMCID: PMC8664161 DOI: 10.1016/j.cell.2021.10.024] [Citation(s) in RCA: 174] [Impact Index Per Article: 58.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 07/30/2021] [Accepted: 10/21/2021] [Indexed: 12/12/2022]
Abstract
Current catalogs of regulatory sequences in the human genome are still incomplete and lack cell type resolution. To profile the activity of gene regulatory elements in diverse cell types and tissues in the human body, we applied single-cell chromatin accessibility assays to 30 adult human tissue types from multiple donors. We integrated these datasets with previous single-cell chromatin accessibility data from 15 fetal tissue types to reveal the status of open chromatin for ∼1.2 million candidate cis-regulatory elements (cCREs) in 222 distinct cell types comprised of >1.3 million nuclei. We used these chromatin accessibility maps to delineate cell-type-specificity of fetal and adult human cCREs and to systematically interpret the noncoding variants associated with complex human traits and diseases. This rich resource provides a foundation for the analysis of gene regulatory programs in human cell types across tissues, life stages, and organ systems.
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Affiliation(s)
- Kai Zhang
- Ludwig Institute for Cancer Research, La Jolla, CA, USA; Department of Cellular and Molecular Medicine, University of California San Diego School of Medicine, La Jolla, CA, USA
| | - James D Hocker
- Ludwig Institute for Cancer Research, La Jolla, CA, USA; Medical Scientist Training Program, University of California San Diego, La Jolla, CA, USA; Biomedical Sciences Graduate Program, University of California San Diego, La Jolla, CA, USA
| | - Michael Miller
- Center for Epigenomics, University of California San Diego, La Jolla, CA, USA
| | - Xiaomeng Hou
- Center for Epigenomics, University of California San Diego, La Jolla, CA, USA
| | - Joshua Chiou
- Biomedical Sciences Graduate Program, University of California San Diego, La Jolla, CA, USA; Department of Pediatrics, Pediatric Diabetes Research Center, University of California San Diego, La Jolla, CA, USA
| | - Olivier B Poirion
- Center for Epigenomics, University of California San Diego, La Jolla, CA, USA
| | - Yunjiang Qiu
- Ludwig Institute for Cancer Research, La Jolla, CA, USA
| | - Yang E Li
- Ludwig Institute for Cancer Research, La Jolla, CA, USA; Department of Cellular and Molecular Medicine, University of California San Diego School of Medicine, La Jolla, CA, USA
| | - Kyle J Gaulton
- Department of Pediatrics, Pediatric Diabetes Research Center, University of California San Diego, La Jolla, CA, USA; Institute for Genomic Medicine, University of California San Diego, La Jolla, CA, USA
| | - Allen Wang
- Center for Epigenomics, University of California San Diego, La Jolla, CA, USA
| | - Sebastian Preissl
- Center for Epigenomics, University of California San Diego, La Jolla, CA, USA
| | - Bing Ren
- Ludwig Institute for Cancer Research, La Jolla, CA, USA; Center for Epigenomics, University of California San Diego, La Jolla, CA, USA; Department of Cellular and Molecular Medicine, University of California San Diego School of Medicine, La Jolla, CA, USA; Institute for Genomic Medicine, University of California San Diego, La Jolla, CA, USA.
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8
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Gatti G, Betts C, Rocha D, Nicola M, Grupe V, Ditada C, Nuñez NG, Roselli E, Araya P, Dutto J, Boffelli L, Fernández E, Coussens LM, Maccioni M. High IRF8 expression correlates with CD8 T cell infiltration and is a predictive biomarker of therapy response in ER-negative breast cancer. Breast Cancer Res 2021; 23:40. [PMID: 33766090 PMCID: PMC7992828 DOI: 10.1186/s13058-021-01418-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 03/10/2021] [Indexed: 12/18/2022] Open
Abstract
Background Characterization of breast cancer (BC) through the determination of conventional markers such as ER, PR, HER2, and Ki67 has been useful as a predictive and therapeutic tool. Also, assessment of tumor-infiltrating lymphocytes has been proposed as an important prognostic aspect to be considered in certain BC subtypes. However, there is still a need to identify additional biomarkers that could add precision in distinguishing therapeutic response of individual patients. To this end, we focused in the expression of interferon regulatory factor 8 (IRF8) in BC cells. IRF8 is a transcription factor which plays a well-determined role in myeloid cells and that seems to have multiple antitumoral roles: it has tumor suppressor functions; it acts downstream IFN/STAT1, required for the success of some therapeutic regimes, and its expression in neoplastic cells seems to depend on a cross talk between the immune contexture and the tumor cells. The goal of the present study was to examine the relationship between IRF8 with the therapeutic response and the immune contexture in BC, since its clinical significance in this type of cancer has not been thoroughly addressed. Methods We identified the relationship between IRF8 expression and the clinical outcome of BC patients and validated IRF8 as predictive biomarker by using public databases and then performed in silico analysis. To correlate the expression of IRF8 with the immune infiltrate in BC samples, we performed quantitative multiplex immunohistochemistry. Results IRF8 expression can precisely predict the complete pathological response to monoclonal antibody therapy or to select combinations of chemotherapy such as FAC (fluorouracil, adriamycin, and cytoxan) in ER-negative BC subtypes. Analysis of immune cell infiltration indicates there is a strong correlation between activated and effector CD8+ T cell infiltration and tumoral IRF8 expression. Conclusions We propose IRF8 expression as a potent biomarker not only for prognosis, but also for predicting therapy response in ER-negative BC phenotypes. Its expression in neoplastic cells also correlates with CD8+ T cell activation and infiltration. Therefore, our results justify new efforts towards understanding mechanisms regulating IRF8 expression and how they can be therapeutically manipulated. Supplementary Information The online version contains supplementary material available at 10.1186/s13058-021-01418-7.
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Affiliation(s)
- Gerardo Gatti
- Laboratorio de Investigación en Cáncer, Fundación para el progreso de la Medicina, X5000EMS, Córdoba, Argentina. .,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
| | - Courtney Betts
- Department of Cell, Developmental & Cancer Biology, Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, USA
| | - Darío Rocha
- Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Maribel Nicola
- Laboratorio de Investigación en Cáncer, Fundación para el progreso de la Medicina, X5000EMS, Córdoba, Argentina
| | - Verónica Grupe
- Laboratorio de Investigación en Cáncer, Fundación para el progreso de la Medicina, X5000EMS, Córdoba, Argentina
| | - Cecilia Ditada
- Laboratorio de Investigación en Cáncer, Fundación para el progreso de la Medicina, X5000EMS, Córdoba, Argentina
| | - Nicolas G Nuñez
- Institute of Experimental Immunology, University of Zurich, Zurich, Switzerland
| | - Emiliano Roselli
- Departamento de Bioquímica Clínica, Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, 5000, Argentina
| | - Paula Araya
- Departamento de Bioquímica Clínica, Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, 5000, Argentina
| | - Jeremías Dutto
- Departamento de Bioquímica Clínica, Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, 5000, Argentina
| | - Lucia Boffelli
- Departamento de Bioquímica Clínica, Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, 5000, Argentina
| | - Elmer Fernández
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.,CIDIE-CONICET, Universidad Católica de Córdoba, Córdoba, Argentina
| | - Lisa M Coussens
- Department of Cell, Developmental & Cancer Biology, Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, USA
| | - Mariana Maccioni
- Departamento de Bioquímica Clínica, Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, 5000, Argentina
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9
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Yang T, Wang R, Zhang J, Bao C, Zhang J, Li R, Chen X, Wu S, Wen J, Wei S, Li H, Cai H, Yang X, Zhao Y. Mechanism of berberine in treating Helicobacter pylori induced chronic atrophic gastritis through IRF8-IFN-γ signaling axis suppressing. Life Sci 2020; 248:117456. [PMID: 32097666 DOI: 10.1016/j.lfs.2020.117456] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 02/15/2020] [Accepted: 02/19/2020] [Indexed: 12/15/2022]
Abstract
AIMS In this study, we will investigate the therapeutic effects of berberine (BBR) in Helicobacter pylori (H. pylori) induced chronic atrophic gastritis (CAG). Furthermore, potential mechanisms of BBR in regulating IRF8-IFN-γ signaling axis will also be investigated. MATERIALS AND METHODS H. pylori were utilized to establish CAG model of rats. Therapeutic effects of BBR on serum supernatant indices, and histopathology of stomach were analyzed in vivo. Moreover, GES-1 cells were infected by H. pylori, and intervened with BBR in vitro. Cell viability, morphology, proliferation, and quantitative analysis were detected by high-content screening (HCS) imaging assay. To further investigate the potential mechanisms of BBR, relative mRNA, immunohistochemistry and protein expression in IRF8-IFN-γ signaling axis were measured. KEY FINDINGS Results showed serum supernatant indices including IL-17, CXCL1, and CXCL9 were downregulated by BBR intervention, while, G-17 increased significantly. Histological injuries of gastric mucosa induced by H. pylori also were alleviated. Moreover, cell viability and morphology changes of GES-1 cells were improved by BBR intervention. In addition, proinflammatory genes and IRF8-IFN-γ signaling axis related genes, including Ifit3, Upp1, USP18, Nlrc5, were suppressed by BBR administration in vitro and in vivo. The proteins expression related to IRF8-IFN-γ signaling axis, including Ifit3, IRF1 and Ifit1 were downregulated by BBR intervention.
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Affiliation(s)
- Tao Yang
- College of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, No. 37, 12 Bridge Road, Chengdu 610075, PR China
| | - Ruilin Wang
- Integrative Medical Center, The Fifth Medical Center of PLA General Hospital, Beijing 100039, PR China
| | - Jianzhong Zhang
- Center of Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing 100039, PR China
| | - Chunmei Bao
- Division of Clinical Microbiology, The Fifth Medical Center of PLA General Hospital, Beijing 100039, PR China
| | - Juling Zhang
- Division of Clinical Microbiology, The Fifth Medical Center of PLA General Hospital, Beijing 100039, PR China
| | - Ruisheng Li
- Research Center for Clinical and Translational Medicine, The Fifth Medical Center of PLA General Hospital, Beijing 100039, PR China
| | - Xing Chen
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Shihua Wu
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Jianxia Wen
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Shizhang Wei
- Department of Pharmacy, The Fifth Medical Center of PLA General Hospital, Beijing 100039, PR China
| | - Haotian Li
- Department of Pharmacy, The Fifth Medical Center of PLA General Hospital, Beijing 100039, PR China
| | - Huadan Cai
- Department of Pharmacy, The Fifth Medical Center of PLA General Hospital, Beijing 100039, PR China
| | - Xiangdong Yang
- Colorectal and Anal Surgery, Chengdu Anorectal Hospital, No 152 Daqiang East Street, Taisheng South Road, Chengdu 610075, PR China.
| | - Yanling Zhao
- Department of Pharmacy, The Fifth Medical Center of PLA General Hospital, Beijing 100039, PR China.
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10
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Wang H, Yang L, Qu H, Feng H, Wu S, Bao W. Global Mapping of H3K4 Trimethylation (H3K4me3) and Transcriptome Analysis Reveal Genes Involved in the Response to Epidemic Diarrhea Virus Infections in Pigs. Animals (Basel) 2019; 9:ani9080523. [PMID: 31382472 PMCID: PMC6719071 DOI: 10.3390/ani9080523] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 07/29/2019] [Accepted: 07/30/2019] [Indexed: 12/23/2022] Open
Abstract
Porcine epidemic diarrhea virus (PEDV) is currently detected as the main pathogen causing severe diarrhea in pig farms. The phenotypic alterations induced by pathogenic infections are usually tightly linked with marked changes in epigenetic modification and gene expression. We performed global mapping of H3K4 trimethylation (H3K4me3) and transcriptomic analyses in the jejunum of PEDV-infected and healthy piglets using chromatin immunoprecipitation sequencing and RNA-seq techniques. A total of 1885 H3K4me3 peaks that are associated with 1723 genes were characterized. Moreover, 290 differentially expressed genes were identified, including 104 up-regulated and 186 down-regulated genes. Several antiviral genes including 2'-5'-oligoadenylate synthetase 1 (OAS1), 2'-5'-oligoadenylate synthetase 2 (OAS2), ephrin B2 (EFNB2), and CDC28 protein kinase regulatory subunit 1B (CKS1B) with higher H3K4me3 enrichment and expression levels in PEDV-infected samples suggested the potential roles of H3K4me3 deposition in promoting their expressions. Transcription factor annotation analysis highlighted the potential roles of two transcription factors interferon regulatory factor 8 (IRF8) and Kruppel like factor 4 (KLF4) in modulating the differential expression of genes involved in PEDV infection. The results provided novel insights into PEDV infection from the transcriptomic and epigenetic layers and revealed previously unknown and intriguing elements potentially involved in the host responses.
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Affiliation(s)
- Haifei Wang
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Li Yang
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Huan Qu
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Haiyue Feng
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Shenglong Wu
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225009, China
| | - Wenbin Bao
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China.
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225009, China.
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11
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Transcription factors IRF8 and PU.1 are required for follicular B cell development and BCL6-driven germinal center responses. Proc Natl Acad Sci U S A 2019; 116:9511-9520. [PMID: 31000603 DOI: 10.1073/pnas.1901258116] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The IRF and Ets families of transcription factors regulate the expression of a range of genes involved in immune cell development and function. However, the understanding of the molecular mechanisms of each family member has been limited due to their redundancy and broad effects on multiple lineages of cells. Here, we report that double deletion of floxed Irf8 and Spi1 (encoding PU.1) by Mb1-Cre (designated DKO mice) in the B cell lineage resulted in severe defects in the development of follicular and germinal center (GC) B cells. Class-switch recombination and antibody affinity maturation were also compromised in DKO mice. RNA-seq (sequencing) and ChIP-seq analyses revealed distinct IRF8 and PU.1 target genes in follicular and activated B cells. DKO B cells had diminished expression of target genes vital for maintaining follicular B cell identity and GC development. Moreover, our findings reveal that expression of B-cell lymphoma protein 6 (BCL6), which is critical for development of germinal center B cells, is dependent on IRF8 and PU.1 in vivo, providing a mechanism for the critical role for IRF8 and PU.1 in the development of GC B cells.
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12
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Ibrahim ML, Klement JD, Lu C, Redd PS, Xiao W, Yang D, Browning DD, Savage NM, Buckhaults PJ, Morse HC, Liu K. Myeloid-Derived Suppressor Cells Produce IL-10 to Elicit DNMT3b-Dependent IRF8 Silencing to Promote Colitis-Associated Colon Tumorigenesis. Cell Rep 2018; 25:3036-3046.e6. [PMID: 30540937 PMCID: PMC6319669 DOI: 10.1016/j.celrep.2018.11.050] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 10/06/2018] [Accepted: 11/12/2018] [Indexed: 12/13/2022] Open
Abstract
IL-10 functions as a suppressor of colitis and colitis-associated colon cancer, but it is also a risk locus associated with ulcerative colitis. The mechanism underlying the contrasting roles of IL-10 in inflammation and colon cancer is unknown. We report here that inflammation induces the accumulation of CD11b+Gr1+ myeloid-derived suppressor cells (MDSCs) that express high levels of IL-10 in colon tissue. IL-10 induces the activation of STAT3 that directly binds to the Dnmt1 and Dnmt3b promoters to activate their expression, resulting in DNA hypermethylation at the Irf8 promoter to silence IRF8 expression in colon epithelial cells. Mice with Irf8 deleted in colonic epithelial cells exhibit significantly higher inflammation-induced tumor incidence. Human colorectal carcinomas have significantly higher DNMT1 and DNMT3b and lower IRF8 expression, and they exhibit significantly higher IRF8 promoter DNA methylation than normal colon. Our data identify the MDSC-IL-10-STAT3-DNMT3b-IRF8 pathway as a link between chronic inflammation and colon cancer initiation.
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Affiliation(s)
- Mohammed L Ibrahim
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA 30912, USA; Georgia Cancer Center, Augusta University, Augusta, GA 30912, USA
| | - John D Klement
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA 30912, USA; Georgia Cancer Center, Augusta University, Augusta, GA 30912, USA; Charlie Norwood VA Medical Center, Augusta, GA 30904, USA
| | - Chunwan Lu
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA 30912, USA; Georgia Cancer Center, Augusta University, Augusta, GA 30912, USA; Charlie Norwood VA Medical Center, Augusta, GA 30904, USA
| | - Priscilla S Redd
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA 30912, USA; Georgia Cancer Center, Augusta University, Augusta, GA 30912, USA; Charlie Norwood VA Medical Center, Augusta, GA 30904, USA
| | - Wei Xiao
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA 30912, USA; Georgia Cancer Center, Augusta University, Augusta, GA 30912, USA
| | - Dafeng Yang
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA 30912, USA; Georgia Cancer Center, Augusta University, Augusta, GA 30912, USA; Charlie Norwood VA Medical Center, Augusta, GA 30904, USA
| | - Darren D Browning
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA 30912, USA; Georgia Cancer Center, Augusta University, Augusta, GA 30912, USA
| | - Natasha M Savage
- Department of Pathology, Medical College of Georgia, Augusta, GA 30912, USA
| | - Phillip J Buckhaults
- Department of Drug Discovery and Biomedical Sciences, the University of South Carolina, Columbia, SC 29208, USA
| | - Herbert C Morse
- Virology and Cellular Immunology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, NIH, Rockville, MD 20852, USA
| | - Kebin Liu
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA 30912, USA; Georgia Cancer Center, Augusta University, Augusta, GA 30912, USA; Charlie Norwood VA Medical Center, Augusta, GA 30904, USA.
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13
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Zhang X, Liu CJ. Immune response and immune escape mechanism in Helicobacter pylori infection. Shijie Huaren Xiaohua Zazhi 2018; 26:1832-1842. [DOI: 10.11569/wcjd.v26.i31.1832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Helicobacter pylori (H. pylori) is a Gram-negative bacterium which is parasitic on the surface of the gastric mucosa, and it is a causative agent in the development of chronic gastritis, gastric and duodenal peptic ulcer, gastric adenocarcinoma, and lymphoid tissue lymphoma associated with the gastric mucosa. After H. pylori infection, the bacterium is first recognized by the pattern recognition receptors of immune cells, which in turn causes the innate immune and adaptive immune responses, but these responses are usually insufficient to eliminate bacterial infections. H. pylori can evade the identification and clearance by the immune system by modifying and attenuating the immunogenicity of its pathogen-associated molecular patterns, regulating the immune responses of innate immune cells and T cells, and leading to persistent infection. A thorough understanding of the immune response and immune escape mechanism in H. pylori infection is of great significance for eliminating H. pylori infection and controlling the occurrence of H. pylori infection-related diseases.
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Affiliation(s)
- Xin Zhang
- Department of Pharmacy and Pharmacology, the Fourth Medical Center of the PLA General Hospital, Beijing 100048, China,Institute of Biotechnology, Academy of Military Medical Sciences, Beijing 100071, China
| | - Chun-Jie Liu
- Institute of Biotechnology, Academy of Military Medical Sciences, Beijing 100071, China
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14
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Klement JD, Paschall AV, Redd PS, Ibrahim ML, Lu C, Yang D, Celis E, Abrams SI, Ozato K, Liu K. An osteopontin/CD44 immune checkpoint controls CD8+ T cell activation and tumor immune evasion. J Clin Invest 2018; 128:5549-5560. [PMID: 30395540 DOI: 10.1172/jci123360] [Citation(s) in RCA: 173] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 09/11/2018] [Indexed: 12/14/2022] Open
Abstract
Despite breakthroughs in immune checkpoint inhibitor (ICI) immunotherapy, not all human cancers respond to ICI immunotherapy and a large fraction of patients with the responsive types of cancers do not respond to current ICI immunotherapy. This clinical conundrum suggests that additional immune checkpoints exist. We report here that interferon regulatory factor 8 (IRF8) deficiency led to impairment of cytotoxic T lymphocyte (CTL) activation and allograft tumor tolerance. However, analysis of chimera mice with competitive reconstitution of WT and IRF8-KO bone marrow cells as well as mice with IRF8 deficiency only in T cells indicated that IRF8 plays no intrinsic role in CTL activation. Instead, IRF8 functioned as a repressor of osteopontin (OPN), the physiological ligand for CD44 on T cells, in CD11b+Ly6CloLy6G+ myeloid cells and OPN acted as a potent T cell suppressor. IRF8 bound to the Spp1 promoter to repress OPN expression in colon epithelial cells, and colon carcinoma exhibited decreased IRF8 and increased OPN expression. The elevated expression of OPN in human colon carcinoma was correlated with decreased patient survival. Our data indicate that myeloid and tumor cell-expressed OPN acts as an immune checkpoint to suppress T cell activation and confer host tumor immune tolerance.
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Affiliation(s)
- John D Klement
- Department of Biochemistry and Molecular Biology, and.,Georgia Cancer Center, Medical College of Georgia, Augusta, Georgia, USA.,Charlie Norwood VA Medical Center, Augusta, Georgia, USA
| | - Amy V Paschall
- Department of Biochemistry and Molecular Biology, and.,Georgia Cancer Center, Medical College of Georgia, Augusta, Georgia, USA.,Charlie Norwood VA Medical Center, Augusta, Georgia, USA
| | - Priscilla S Redd
- Department of Biochemistry and Molecular Biology, and.,Georgia Cancer Center, Medical College of Georgia, Augusta, Georgia, USA.,Charlie Norwood VA Medical Center, Augusta, Georgia, USA
| | - Mohammed L Ibrahim
- Department of Biochemistry and Molecular Biology, and.,Georgia Cancer Center, Medical College of Georgia, Augusta, Georgia, USA
| | - Chunwan Lu
- Department of Biochemistry and Molecular Biology, and.,Georgia Cancer Center, Medical College of Georgia, Augusta, Georgia, USA.,Charlie Norwood VA Medical Center, Augusta, Georgia, USA
| | - Dafeng Yang
- Department of Biochemistry and Molecular Biology, and.,Georgia Cancer Center, Medical College of Georgia, Augusta, Georgia, USA.,Charlie Norwood VA Medical Center, Augusta, Georgia, USA
| | - Esteban Celis
- Georgia Cancer Center, Medical College of Georgia, Augusta, Georgia, USA
| | - Scott I Abrams
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Keiko Ozato
- Division of Developmental Biology, National Institute of Child Health and Human Development, NIH, Bethesda, Maryland, USA
| | - Kebin Liu
- Department of Biochemistry and Molecular Biology, and.,Georgia Cancer Center, Medical College of Georgia, Augusta, Georgia, USA.,Charlie Norwood VA Medical Center, Augusta, Georgia, USA
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15
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Wu BC, Lee AHY, Hancock REW. Mechanisms of the Innate Defense Regulator Peptide-1002 Anti-Inflammatory Activity in a Sterile Inflammation Mouse Model. THE JOURNAL OF IMMUNOLOGY 2017; 199:3592-3603. [DOI: 10.4049/jimmunol.1700985] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 09/11/2017] [Indexed: 01/12/2023]
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16
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Guo Y, Yang Z, Wu S, Xu P, Peng Y, Yao M. Inhibition of IRF8 Negatively Regulates Macrophage Function and Impairs Cutaneous Wound Healing. Inflammation 2016; 40:68-78. [DOI: 10.1007/s10753-016-0454-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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